Shed calculators
Start with the shed size calculator: it turns your mower, bikes and tools into a standard shed size and the door width you need. Then size the foundation and anchors for that footprint.
01Shed size calculatorEnter your mower, bikes, snow blower and tools to get the smallest standard shed size that fits them with room to reach, plus the door width you need.02Shed foundation calculatorCompare a gravel pad, a concrete slab and a paver base for your shed size: volume, tons, bags, paver count and material cost side by side.03Gravel pad calculatorHow much gravel for a shed pad: cubic yards and tons for any shed size, border and depth, with a timber or paver frame and weed fabric count.04Shed anchor calculatorEstimate how many ground or concrete anchors a shed needs from its size, base and wind exposure, and which anchor type suits gravel, soil or a slab.05Roof pitch calculatorTurn a shed roof pitch into degrees, ridge height, rafter length, roof area and shingle bundles for a gable or single-slope shed roof.06Snow load calculatorEstimate the design roof snow load on a shed from your ground snow load, roof slope and roof surface using the ASCE 7 flat-roof method, and the total weight on the roof.07Permit size checkerCheck your planned shed against the common permit-exemption thresholds (100, 120 and 200 sq ft), height limits, setbacks and the triggers that always need a permit.08Shed cost calculatorEstimate the total cost of a shed kit by size and material using real per-square-foot kit prices, plus foundation, anchoring and fit-out.09Paint and stain calculatorWork out the wall area of a shed including gables, subtract doors and windows, and get gallons of paint or stain for your siding type and number of coats.10Shed ramp calculatorFind how long a shed ramp must be for your door threshold height, for a lawn tractor, a push mower or a hand cart, with angle and lumber estimate.
What people buy after running the numbers
Prices change often; the button shows today's price on Amazon.
This page is researched guidance, not professional engineering, legal or building-code advice. Sizes, loads and permit rules vary by product and by town: check your local code and the kit manufacturer's instructions before you build.